HARQ data reception in multiradio device

Abstract

A HARQ data reception scheme for a multiradio communication device is disclosed. The communication device operates multiple radio connections and monitors interference level caused to a target radio connection by at least one other radio connection operated in the communication device. A data packet and at least one retransmission data packet are received with the target radio connection. The utilization of the received data packet and the at least one received retransmission data packet in a hybrid automatic repeat request data reception is determined according to the interference level at the time instant associated with the reception of the corresponding data packet. Under high interference, the received data packet may be discarded, and detected and decoded data packets may be weighted for the HARQ combining according to the interference levels associated with the data packets.

Description

FIELD[0001]The invention relates to data reception in a communication device operating multiple radio connections.BACKGROUND[0002]The number of different radios in a mobile communication device is steadily increasing to facilitate more flexible connectivity and a broader range of services. Cellular access alone is no longer sufficient, but new wireless technologies are integrated into communication devices now and especially in the future to enable novel connectivity solutions. Integration of multiple radios into a single terminal, however, introduces a serious integration challenge that is becoming more pronounced as the number of radios increases. One element of the integration challenge is the appropriate handling of simultaneous operation of radios. It is quite evident that users are willing to use different radios at the same time, like using a headset employing wireless Bluetooth® technology during a GSM phone call, and using a wireless local area network (WLAN) connection for...

AI Technical Summary

Benefits of technology

This approach effectively reduces errors in data detection by discarding corrupted packets and weighting decoded data based on interference levels, ensuring accurate data decoding and reducing the need for unnecessary retransmissions, thereby enhancing the reliability of data reception in multiradio communication devices.

Problems solved by technology

Integration of multiple radios into a single terminal, however, introduces a serious integration challenge that is becoming more pronounced as the number of radios increases.

If there are two or more operational radio connections from one communication device, the connections may very well interfere with one another.

Even if the connections are not operating on the same frequency band, they may still interfere with each other due to the non-idealities in the components' of the communication device.

The components may introduce spectral leakage, and the selectivity of receivers may not be ideal, meaning that they may also receive signal components belonging to a signal other than the desired one.

In a multiradio communication device, the level of the interference caused by one connection to another may be significantly high due to the close proximity of transmitters and receivers.

Accordingly, a problem with the conventional HARQ is that a data packet received under a strong interference will be detected and decoded.

Probably, the decoding of the data packet was not successful and, thus, the decoded data contains errors.

Accordingly, the data packet received under the strong interference and containing a significant amount of errors may hinder data detection in the combining stage considerably.

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